Timberland's rugged footwear is designed to get dirty - that's why Timberland created their Timberland product care line to help you clean and protect your footwear. Timberland's water-based Renewbuck foam cleaner targets tough stains - whether it's rock salt, grass, mud or ketchup that's found its way onto your suede or nubuck footwear, we're helping you to keep it looking as good as new. Imported. For use on all suede and nubuck leathers. Test on a small inconspicuous area before applying the full application, as some colors may darken.